Features of 4Media MP4 to MP3 Converter include: 1. Control the number of processed cores even during conversion. 2. You can freely select CBR/VBR output format for certain profiles. 3. Add function of volume control. 4. The software supports multithreading and batch conversion, so the conversion speed is super fast. 5. It is easy to handle the software. You can pause, stop and continue the conversion at any moment. 6. During the conversion you are free to use the default settings or set parameters of video and audio codec by yourself. You can select the compression method, sample rate, bitrate, stereo or mono when converting to WAV. 7. You can also copy ID3 tag between audio formats. 8. Furthermore the MP4 to MP3 converter allows users to select whether delete the original files. 9. Common-use and advanced settings for profiles are offered to meet different customers' needs. 10. Customizing the output file size with a Bitrate Calculator tool is available now; Function of creating video from pictures is added. 11. Set various profiles from the same source file for outputting to facilitate your conversion. 12. Support running the program in the background for your convenience.